This bug was fixed in the package zfs-linux - 0.6.5.11-1ubuntu3.3
---------------
zfs-linux (0.6.5.11-1ubuntu3.3) artful; urgency=medium
* Fix mmap'd libaio read on non-prefaulted page deadlock (LP: #1754584)
- Revert previous fix as there still is a potential for deadlock
on the prefaulted page(s). Resolve the issue by only taking a
reference on the page when copying it and not the page lock.
The inode range lock protects against concurrent updates via
zfs_read() and zfs_write().
-- Colin Ian King <colin.k...@canonical.com> Wed, 28 Mar 2018 08:56:18
+0100
** Changed in: zfs-linux (Ubuntu Artful)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1754584
Title:
zfs system process hung on container stop/delete
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